Evaluation of gait symmetry after stroke: A comparison of current methods and recommendations for standardization
Evaluation of gait symmetry after stroke: A comparison of current methods and recommendations for standardization
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DOI：
10.1016/j.gaitpost.2009.10.014
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发表时间：
2010-02-01
期刊：
影响因子：
2.4
通讯作者：
McIlroy, William E.
中科院分区：
文献类型：
--
作者：
Patterson, Kara K.;Gage, William H.;McIlroy, William E.
对称性是一种步态特征，越来越多地被测量和报道，特别是在中风患者群体中。然而，没有公认的标准来评估对称性，这使得很难在不同研究之间进行比较，并建立指导临床决策的标准。本研究比较了用于描述中风后步态的最常见的时空步态对称性表达，并提出了最适合标准化的测量方法。使用步长、摆动时间、站立时间、双支撑时间和肢体内摆动与站立时间之比，比较了以下对称性方程：对称率、对称性指数、步态不对称性和对称角。在161名居住在社区的中风患者和81名健康成人作为参照组进行比较。我们的分析支持对称比作为标准化方程的建议，以及步长、摆动时间和站立时间作为方程中使用的步态参数的建议。未来的工作应侧重于确定这些措施的个体内可变性，并将它们与步态功能障碍的机制联系起来。(C)2009爱思唯尔B.V.保留所有权利。
Symmetry is a gait characteristic that is increasingly measured and reported, particularly in the stroke patient population. However, there is no accepted standard for assessing symmetry making it difficult to compare across studies and establish criteria to guide clinical decision making. This study compares the most common expressions of spatiotemporal gait symmetry to describe post-stroke gait and makes recommendations regarding the most suitable measure for standardization. The following symmetry equations were compared: symmetry ratio, symmetry index, gait asymmetry and symmetry angle using step length, swing time, stance time, double support time and an intra-limb ratio of swing: stance time. Comparisons were made within a group of 161 community-dwelling, ambulatory individuals with stroke and 81 healthy adults as a reference group. Our analysis supports the recommendations of the symmetry ratio as the equation for standardization and step length, swing time and stance time as the gait parameters to be used in the equation. Future work should focus on establishing the intra-individual variability of these measures and linking them to mechanisms of gait dysfunction. (C) 2009 Elsevier B.V. All rights reserved.